Revision of JSON Fundamentals

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1 file changed, 8 insertions, 8 deletions

json.md

			@@ -14,19 +14,19 @@ JSON (JavaScript Object Notation) is a __text-based data exchange format__.
14	14		It is a collection of key-value pairs where the key must be a string type, and
15	15		the value can be of any of the following types:
16	16
17		-	- Number
18		-	- String
19		-	- Boolean
20		-	- Array
21		-	- Object
22		-	- null
	17	+	- Number `{“age”: 45}`
	18	+	- String `{"school": "ZipCode"}`
	19	+	- Boolean `{“active”:true}`
	20	+	- Array `{ "nums": [ 13, 17, 19, 23 ] }`
	21	+	- Object `{ "spouse":{"firstName":"John","lastName":"Smith" } }`
	22	+	- null `{"weddingDate": null}`
23	23
24	24		A couple of important rules to note:
25	25
26		-	- In the JSON data format, the keys must be enclosed in double quotes.
	26	+	- In the JSON data format, the keys must be enclosed in double quotes as strings.
27	27		- The key and value must be separated by a colon (:) symbol.
28	28		- There can be multiple key-value pairs. Two key-value pairs must be separated by a comma (,) symbol.
29		-	- No comments (// or /* */) are allowed in JSON data. (But you can get around that, if you're curious.)
	29	+	- No comments (// or /* */) are allowed in JSON data.
30	30
31	31		## Usage
32	32

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1 file changed, 7 insertions, 4 deletions

json.md

			@@ -4,13 +4,15 @@ JavaScript Object Notation (JSON) is a standard text-based format for representi
4	4		based on JavaScript object syntax.
5	5		It is commonly used for transmitting data in web applications (e.g., sending some data
6	6		from the server to the client, so it can be displayed on a web page, or vice versa).
7		-	You'll come across it quite often, so in this article, we give you all you need to
8		-	work with JSON using JavaScript, including parsing JSON so you can access data within it, and creating JSON.
	7	+	You'll come across it quite often.
	8	+	Better get a handle on it.
	9	+
9	10
10	11		## Data Types
11	12
12	13		JSON (JavaScript Object Notation) is a __text-based data exchange format__.
13		-	It is a collection of key-value pairs where the key must be a string type, and the value can be of any of the following types:
	14	+	It is a collection of key-value pairs where the key must be a string type, and
	15	+	the value can be of any of the following types:
14	16
15	17		- Number
16	18		- String
			@@ -29,7 +31,8 @@ A couple of important rules to note:
29	31		## Usage
30	32
31	33		Often, you may read or write it to files, for configuration purposes, small data sets, and useful structured data.
32		-	It is a common, go-to data format. Most languages have great support for reading and writing it, like Java and Python.
	34	+	It is a common, go-to data format. Most languages have great support for reading and writing it,
	35	+	like Java and Python.
33	36
34	37		JSON exists as a string — useful when you want to transmit data across a network.
35	38		It needs to be converted to a native object when you want to access the data within a program.

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1 file changed, 3 insertions, 3 deletions

json.md

			@@ -97,7 +97,7 @@ It has a great set of syntax flow diagrams you can use to under stand it.
97	97
98	98		## JSON Examples
99	99
100		-	Maybe something that came from a bloggin system.
	100	+	Maybe something that came from a bloggin' system.
101	101
102	102		```json
103	103		{
			@@ -112,7 +112,7 @@ Maybe something that came from a bloggin system.
112	112		}
113	113		```
114	114
115		-	Or this one, a example of something whihc might have come from a database:
	115	+	Or this one, a example of something which might have come from a database:
116	116
117	117		```json
118	118		{
			@@ -129,7 +129,7 @@ Or this one, a example of something whihc might have come from a database:
129	129		}
130	130		```
131	131
132		-	An array:
	132	+	An array of employees:
133	133
134	134		```json
135	135		{

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1 file changed, 19 insertions, 13 deletions

json.md

			@@ -34,7 +34,19 @@ It is a common, go-to data format. Most languages have great support for reading
34	34		JSON exists as a string — useful when you want to transmit data across a network.
35	35		It needs to be converted to a native object when you want to access the data within a program.
36	36
37		-	Example of [python reading of file containing JSON.
	37	+
	38	+	A simple object
	39	+
	40	+	```json
	41	+	{
	42	+	"fruit": "Apple",
	43	+	"size": "Large",
	44	+	"color": "Red",
	45	+	"nums": [ 13, 17, 19, 23 ]
	46	+	}
	47	+	```
	48	+
	49	+	Example of python reading of file containing JSON.
38	50
39	51		```python
40	52		# Python program to read
			@@ -48,9 +60,12 @@ f = open('data.json')
48	60		# returns JSON object as a dictionary
49	61		data = json.load(f)
50	62
	63	+	print(data['fruit']) # 'Apple'
	64	+
	65	+
51	66		# Iterating through the json list
52		-	for i in data['some-array-key']: # in data
53		-	print(i)
	67	+	for i in data['nums']: # in data
	68	+	print(i) # 13, ...
54	69
55	70		# Closing file
56	71		f.close()
			@@ -75,22 +90,13 @@ import json
75	90		with open('data.json', 'w', encoding='utf-8') as f:
76	91		json.dump(data, f, ensure_ascii=False, indent=4)
77	92		```
	93	+	Which will ofrmat the JSON for human reading.
78	94
79	95		Check out: [JSON (JavaScript Object Notation)](https://www.json.org/json-en.html)
80	96		It has a great set of syntax flow diagrams you can use to under stand it.
81	97
82	98		## JSON Examples
83	99
84		-	A simple object
85		-
86		-	```json
87		-	{
88		-	"fruit": "Apple",
89		-	"size": "Large",
90		-	"color": "Red"
91		-	}
92		-	```
93		-
94	100		Maybe something that came from a bloggin system.
95	101
96	102		```json

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Žádné změny

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1 file changed, 4 insertions, 6 deletions

json.md

			@@ -36,7 +36,7 @@ It needs to be converted to a native object when you want to access the data wit
36	36
37	37		Example of [python reading of file containing JSON.
38	38
39		-	```json
	39	+	```python
40	40		# Python program to read
41	41		# json file
42	42
			@@ -45,13 +45,11 @@ import json
45	45		# Opening JSON file
46	46		f = open('data.json')
47	47
48		-	# returns JSON object as
49		-	# a dictionary
	48	+	# returns JSON object as a dictionary
50	49		data = json.load(f)
51	50
52		-	# Iterating through the json
53		-	# list
54		-	for i in data['emp_details']:
	51	+	# Iterating through the json list
	52	+	for i in data['some-array-key']: # in data
55	53		print(i)
56	54
57	55		# Closing file

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1 file changed, 149 insertions

json.md

			@@ -1,5 +1,154 @@
1	1		# JSON Fundamentals
2	2
	3	+	JavaScript Object Notation (JSON) is a standard text-based format for representing structured data
	4	+	based on JavaScript object syntax.
	5	+	It is commonly used for transmitting data in web applications (e.g., sending some data
	6	+	from the server to the client, so it can be displayed on a web page, or vice versa).
	7	+	You'll come across it quite often, so in this article, we give you all you need to
	8	+	work with JSON using JavaScript, including parsing JSON so you can access data within it, and creating JSON.
	9	+
	10	+	## Data Types
	11	+
	12	+	JSON (JavaScript Object Notation) is a __text-based data exchange format__.
	13	+	It is a collection of key-value pairs where the key must be a string type, and the value can be of any of the following types:
	14	+
	15	+	- Number
	16	+	- String
	17	+	- Boolean
	18	+	- Array
	19	+	- Object
	20	+	- null
	21	+
	22	+	A couple of important rules to note:
	23	+
	24	+	- In the JSON data format, the keys must be enclosed in double quotes.
	25	+	- The key and value must be separated by a colon (:) symbol.
	26	+	- There can be multiple key-value pairs. Two key-value pairs must be separated by a comma (,) symbol.
	27	+	- No comments (// or /* */) are allowed in JSON data. (But you can get around that, if you're curious.)
	28	+
	29	+	## Usage
	30	+
	31	+	Often, you may read or write it to files, for configuration purposes, small data sets, and useful structured data.
	32	+	It is a common, go-to data format. Most languages have great support for reading and writing it, like Java and Python.
	33	+
	34	+	JSON exists as a string — useful when you want to transmit data across a network.
	35	+	It needs to be converted to a native object when you want to access the data within a program.
	36	+
	37	+	Example of [python reading of file containing JSON.
	38	+
	39	+	```json
	40	+	# Python program to read
	41	+	# json file
	42	+
	43	+	import json
	44	+
	45	+	# Opening JSON file
	46	+	f = open('data.json')
	47	+
	48	+	# returns JSON object as
	49	+	# a dictionary
	50	+	data = json.load(f)
	51	+
	52	+	# Iterating through the json
	53	+	# list
	54	+	for i in data['emp_details']:
	55	+	print(i)
	56	+
	57	+	# Closing file
	58	+	f.close()
	59	+	```
	60	+
	61	+	Writing JSON:
	62	+
	63	+	`data` is a Python dictionary. It needs to be encoded as JSON before writing.
	64	+
	65	+	Use this for maximum compatibility (Python3 & 2, if you must):
	66	+
	67	+	```python
	68	+	import json
	69	+	with open('data.json', 'w') as f:
	70	+	json.dump(data, f)
	71	+	```
	72	+
	73	+	On a modern system (i.e. Python 3 and UTF-8 support), you can write a nicer file using:
	74	+
	75	+	```python
	76	+	import json
	77	+	with open('data.json', 'w', encoding='utf-8') as f:
	78	+	json.dump(data, f, ensure_ascii=False, indent=4)
	79	+	```
	80	+
3	81		Check out: [JSON (JavaScript Object Notation)](https://www.json.org/json-en.html)
4	82		It has a great set of syntax flow diagrams you can use to under stand it.
5	83
	84	+	## JSON Examples
	85	+
	86	+	A simple object
	87	+
	88	+	```json
	89	+	{
	90	+	"fruit": "Apple",
	91	+	"size": "Large",
	92	+	"color": "Red"
	93	+	}
	94	+	```
	95	+
	96	+	Maybe something that came from a bloggin system.
	97	+
	98	+	```json
	99	+	{
	100	+	"title": "New Blog Post",
	101	+	"content": "This is the content of the blog post...",
	102	+	"publishedDate": "2023-08-25T15:00:00Z",
	103	+	"author": {
	104	+	"username": "authoruser",
	105	+	"email": "author@example.com"
	106	+	},
	107	+	"tags": ["Technology", "Programming"]
	108	+	}
	109	+	```
	110	+
	111	+	Or this one, a example of something whihc might have come from a database:
	112	+
	113	+	```json
	114	+	{
	115	+	"patientName": "Jane Doe",
	116	+	"dateOfBirth": "1985-02-15",
	117	+	"bloodType": "A+",
	118	+	"allergies": ["Pollen", "Penicillin"],
	119	+	"conditions": ["Hypertension", "Diabetes"],
	120	+	"medications": ["Lisinopril", "Metformin"],
	121	+	"emergencyContact": {
	122	+	"username": "emergencyuser",
	123	+	"email": "johnDoe@gmale.com"
	124	+	}
	125	+	}
	126	+	```
	127	+
	128	+	An array:
	129	+
	130	+	```json
	131	+	{
	132	+	"employees":[
	133	+	{"firstName":"John", "lastName":"Doe"},
	134	+	{"firstName":"Anna", "lastName":"Smith"},
	135	+	{"firstName":"Peter", "lastName":"Jones"}
	136	+	]
	137	+	}
	138	+	```
	139	+
	140	+
	141	+
	142	+
	143	+
	144	+
	145	+
	146	+
	147	+
	148	+
	149	+
	150	+
	151	+
	152	+
	153	+
	154	+

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1 file changed, 5 insertions

json.md(vytvořil soubor)

		@@ -0,0 +1,5 @@
1	+	# JSON Fundamentals
2	+
3	+	Check out: [JSON (JavaScript Object Notation)](https://www.json.org/json-en.html)
4	+	It has a great set of syntax flow diagrams you can use to under stand it.
5	+

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